Green engineering Essay Example | Topics and Well Written Essays - 1250 words

Green engineering - Essay Example In the contemporary world, many people have installed the technologies to maximally benefit from solar energy. It is not only efficient, but a sustainable energy that can be relied on even in the future. The sun provides energy in two ways; by heating and through lighting. It radiates great amount of energy that travels through space and spreads all through the earth’s surface. Naturally, the inner core of sun produces the energy through a nuclear fusion of the hydrogen and helium atoms, radiates onto the sun’s surface, and consequently emits electromagnetic radiation onto the earth using a wide variety of wavelengths (â€Å"Alternative energy† kennesaw.edu). Upon reaching the earth surface, it is harvested for greater use in various processes. Solar energy is of great importance in supporting the life and processes of plants, as well as those of humans. Specific Aspects of how Solar Energy works There are two specific technologies of converting solar energy into electricity. These are the commonly known photovoltaic systems and solar thermal systems. They both employ very distinct mechanisms to produce power from the suns light. Photovoltaic energy This system of sunlight conversion uses solar panel technologies with the photovoltaic cells as the core element in generation of power (European communities 5). Solar panels are devices or modules of a connected assembly of photovoltaic cells, with the capability of collecting the sunlight photons for conversion. The solar panels are developed in different sizes of rectangular shape, from which several can be used as a combination to produce enough electricity. The solar cells in the panels are made up of semiconductor materials (silicon is very common), whose conductivity can be increased by introducing impurities (European communities 5). Basically, in the presence of light or sunshine, some of the radiant energy that hits PV cells is absorbed and transferred to the electrons within the atoms of the semiconductor. Because of the continuous transmitting energy from the sun, electrons of the cells tend to shift from their positions as they move towards a preferential side of attraction in the cells, creating an electric voltage that can be collected and channeled (â€Å"How do solar† nwwindandsolar.com). As the electrons move, they create space for others to move into, and hence generating the current in the electrical circuit (direct conversion of sunlight into electricity). Generally, once the energy as electricity is produced, the direct current generated and collected is converted through an inverter, into alternating current required to run most electronic appliances. The electricity can also be used by connecting the inverter to any load, or connect to the battery banks to store energy for further use. Suppose one switches into solar generated electricity using this technology, he has to enquire and seek suitable number and sizes of the solar panels that can be placed on the roof s, away from shade, and in a suitable position (South facing installations on the roof recommended), with correct angle inclinations to benefit

Mobile Application for City Target Case Study Example | Topics and Well Written Essays - 750 words

Mobile Application for City Target - Case Study Example E-commerce is an area that has grown tremendously. People can carry out transactions online. Various businesses have gone online for a number of reasons. First and foremost, e-commerce provides one with a platform to reach a larger customer base. A customer can purchase items from a different country from the comfort of their couch. This is made easier by the fact that internet users can access the internet from their mobile phones. For this reason then, it is crucial for businesses to create an online mobile application system that will ensure quality service provision to the customer. City Target is a state street store that deals with a range of products amongst them food, clothes and other household items (ABC, p.1). Through an online business system, the store is set to increase its profit margin. Through the use of a mobile application system, the store stands a better chance of easily reaching more of its customer. Specifically, looking at the professional clothes sale, the st ore can implement several options that can contribute to better service delivery. Online clothes shopping can prove to be challenging since a shopper has to take into considerations many things. Unlike physically shopping for clothes, with online shopping, a customer cannot try out the clothes to see whether they fit well or determine the material’s texture and whether it is to their liking. ... e anytime and anywhere, directly sending advertising and promotional information, better in-store navigation and enhancing customers’ ability to browse order and pay for products using their mobile phones (GS1 MobileCom 9). In shopping for clothes online, web applications have managed to support only basic functions. Some of the problems that a customer experiences include poor fit, mismatch of color and bad drape. This has an adverse effect on the business since the customer will be hesitant to buy a product next time because of dissatisfaction (Beck, p.1). Physically, these problems are catered for through the use of mannequins. Thanks to technological advancement, web applications have been manipulated to counter this problem. These applications cater for garment design, sizing and pattern derivation (Cordier 1). One such application is the 3D graphics technology. This technology offers a range of interactive operations. A shopper is able to adjust a 3D mannequin according to their body’s measurement, select and try different garment items and resize the garment to a mannequin. Furthermore, the application offers real time simulation with respect to garment movement. One store that has successfully used this application is Fits.Me clothes store. Through the store’s virtual room, shoppers are able to create a robotic mannequin with their dimensions and use it to fit clothes (Apparel, p.1). As a result, the company has increased its new customers’ sales by 57% (Fits.Me, p.1). By integrating such an application, City Target is assured of increasing its market base as it offers quality service to its customer. Secondly, City Target could also apply artificial intelligence systems. These systems are created to operate as human intelligence. They are similar to